Impact of the Recombinant PRRSv Horsens Strain on the Reproductive Performance of Pregnant Sows

This is our Friday rubric: every week a new Science Page from the Bob Morrison’s Swine Health Monitoring Project. The previous editions of the science page are available on our website.

In this article published by Zoetis in collaboration with the University of Denmark and Copenhagen, the authors discuss that there are currently at least 18 commercially licensed modified live vaccines (MLVs) for the control of PRRS in the global market and because these vaccines are live viruses, precautions need to be followed in order to maintain their safety.

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Production losses from a recombinant PRRSv outbreak

This is our Friday rubric: every week a new Science Page from the Bob Morrison’s Swine Health Monitoring Project. The previous editions of the science page are available on our website.

This week, we are bringing to you a summary from a publication by the SEGES Danish Pig Research Centre and the University of Copenhagen in Denmark. The study published in Porcine Health Management describes production losses associated with a recombinant PRRS strain in breeding herds.

Key Points

  • A new PRRS-1 recombinant between two vaccine strains variant was reported.
  • This variant was detected in a boar station and affected breeding and production herds.
  • Production losses associated with this variant in the production herds comprised a decrease in liveborns/litter and in weaned/litter, as well as an increase in stillborn/litter which was higher than observed in previous Danish PRRS outbreak reports.
Continue reading “Production losses from a recombinant PRRSv outbreak”